Nut-lock.



A. H. WHITE.

' NUT LOCK.

. APPLICATION FILED 111:0. 2a, 1911.

1,037,384, 1 Patented Sept. 3, I912.

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NUT-LOCK.

I Specification-o! Letters-Patent,

Patene dse t. 3; 1912;

Application flledDece-mber 26, 1911, seri ino. cameos.

To all whom it may concern." I N Be it known that I, ARTHUR H. WHITE, a

\ citizen of the- United States, and a resident of New Kensington, in the county of West- 5 moreland and State of Pennsylvania, have invented certain new and useful Improve.

ments in Nut-Locks, of-Iwhich-the following v is a specification, reference being-had to the accompanying drawingss This invention has relation to-certain new movement, the nut lock being. especiallv adapted to be used inconnection with bolts used to hold fish plates-in place and the object. of my invention isto provide a device of this general character, of a simple and in-' expensive nature and of a durable ,construction which shall serveas a washer. and be capable of convenient and accurate adjustment in position upon a bolt to firmly hold the nut, so that manual manipulation will be required to unscrew the nut, the lock be- -,in capable of being repeatedly .used.

ith these and other objects in view the present invention consists in the comb nation and arrangement of parts as will be hereinafter more fully described and finally pointed out in the appended claims, itbeing further understood that changes in the specific structure shown and described may be made wlthin the scope-of the claims,

. without departing from the spirit ofthe invention.

'In the accompanying drawings forming a part of this s ecificatlon and in which like numerals of re erence indicate similar parts in the several views: Figure 1, shows a transverse sectional view through a rail showing two fish plates as held in position by means of a suitable bolt, the bolt carrying a nut locking washer embodying myin- .vention, the nut lock being .shownin ts normal condition beforebe ngcompressed nut with the locking means just before bee finallyv seated. ig. 3, is atop view of my nut logk. Fig. 4, is a bottom iew. Fig.

'5, is a side view.

f; 5Q?" connecting vthetwo ends of railroad rails, so-called fish.;p1ates are employed which are held to the endsof the rails by "means of bolts 'andnuts'. Owing to the. I movement oi the bolt, nut andk'fish plates f incidental" to thezcar wheels poundingover the'rail joints, the. nut gradually'unsciews,

and useful improvements in looks employed to hold a nut against casual retrograde ends 8 toward the flange 10.-

and distorted. Fig. 2,'showsithe bolt and.

inexpensive-positive means in the shape of a. resilient washer arranged to hOld the nut against accidental retrograde movements.

In the'drawings, the numeral 1 designates the base, 2 the web, and 3 the head ofa rail of conventional construction: having suitable bolt openings within'one of which is shown an ordinary bolt- 5. Held to the web. 2 and uponthe base- 1- of the rail, are the. usual fish plates 4. One of these fish plat s has an opening with oppositely positioned kerfs arranged to receive the wings a, of the bolt 5, asshown in Fig.- 1,, and which.- prevent the bolt. 5 from rotating. This 18- a.

common expedient and forms nov part of my.

invention. Threadin upon the bolt 51isthe nut 6,v and interposed etween the nut 6 and the adjacent fish plate 4' is anut-lock constructed according tomyinvention.

My nut lock comprises a flat rectangular plate 710i resilient material, preferably 0blong, and havin a centrallypositioned bolt aperture 9, which upon what forms the outer face of the nutlock is surrounded by theannular flat faced flange 10. The plate 7 has its two opposite ends 8 rounded and at points beyond the flange -10 curved in a direction away from the flange 10,th1s construction being shown clearly in Fig. 5.

As shown in Fig. 3, a flat centrally positioned rib-11 extends over the curved portion of ea'chwashern As-shown in Fig. 5, these ribs 11 areattenuated toward the outer ends 8 of the plate. gradually increase in thickness from the I As shown in Fig. 5,'the ribs 11 are-of a thickness less than the thickness of the flange 10 at the point-of union with the flange, and as shown in Fig. 3, are of a width. less than the diameter of the annular flange 10.;

The aperture 9 is of a diameter larger thanthe diameter ofthe bolt 5.- This cens truction insures the ann plar'flange 10 being held eccentric tothefboltfi.

The belt 7 is of a predetermined thickness and strength so that after the nut 6 is firmly seated upon the washer, the plate WIll be held in-astrained or distorted condition. In

and in. my present invention 1 provide an Thatis, the ribs 11 1 securing the nut 6, owing to the, force required to compress the washer, .the nut 6 ,shears over ,Now, in order to remove the nut 6, manualbe equired andthe' nut rogradel movement the eccentrically held annulus.

manipulation will must be turned in' q and shears in starting over the eccentric annular flange 10. It is of course understood that if the flange 10 were held concentric to the bolt 5, the flange 10 would grind into 5 the nut within certain limits, but there would be no shearing movement of the nut- 6 upon the annular flange '10. However, in securing my un t locking spring washer,'the same of course.1s held upon the bolt 5 and as the opening 9 is greater than the diameter of the bolt 5, the flange 10 is eccentrically held relative to the axis of the bolt- 5. This is an important feature of my invention.

, The nut lock above described may be formed entire at one operation, being stamped from suitable metal.

N0 jarring of the rail, fish plates, bolt or nut is sufliclent to cause the nut 6 to accidentally rotate backward.

The nut lock is simple and inexpensive in construction, can btgrepeatedly used, is both durable and etficient in operation, and can be placed upon or removed 'from the bolt with ease, accuracy and despatch, in a manner absolutely insuring the nut being held to its bolt against accidental displacement. Having thus described my said invention, what I claim as new and desire'to secure by United States Letters Patent is:

1. A nut locking washer comprising a flat rectangular plate of resilient material having a centrally positioned bolt aperture surrounded upon one side by an annular flat faced flange the plate having two opposite ends beyond said flange curved in a direction away from said annular flange, a flat centrally positioned rib extending from each curved endtoward said flange and gradually increasing in thickness toward said flange, said ribs being of a width less than the diameter of said annular flange and of a thickness less than said flange at the point of union therewith.

2. A nut locking washer comprising a plate of resilient material having a bolt aperture said plate upon one side having a fiat faced annular flange surrounding said aperture, two ribs extending from said flange in opposite directions, the ends of said plate being curved said ribs extending over the curved ends and gradually decreasing 1nthickness toward their outer ends.

In testimony whereof I aflix my signature,

in presence of two witnesses.

ARTHUR H. WHITE. Witnesses:

JOHN A. STEEN, ANDREW KELLEY. 

